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Finding the Fourth Proportional to 1,970,598.78, 2,719,614.69 and 1,235,670.12

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Solution

The fourth proportional to 1,970,598.78, 2,719,614.69 and 1,235,670.12 is: 1,705,342.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,970,598.78 : 2,719,614.69 = 1,235,670.12 : x
  2. Step 2: Convert to fraction form
    1,970,598.78/2,719,614.69 = 1,235,670.12/x
  3. Step 3: Cross multiply
    1,970,598.78x = 2,719,614.69 × 1,235,670.12
  4. Step 4: Simplify right side
    1,970,598.78x = 3,360,546,610,346.06
  5. Step 5: Solve for x
    x = 3,360,546,610,346.06/1,970,598.78
  6. Step 6: Final answer
    x = 1,705,342.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.